HSMP-3890-TR1

RF Diode Overview

The HSMP-3890-TR1 is a surface mount RF PIN switch diode from the Broadcom HSMP-389x series, housed in an SOT-23 package. It features a single diode configuration with a peak inverse voltage of 100 V and a maximum forward current of 1 A (1 µs pulse). Electrical specifications include a typical total capacitance of 0.30 pF at 5 V reverse bias and a series resistance of 2.5 Ω at 5 mA forward current. The device operates within a junction temperature range of -65°C to +150°C and has a thermal resistance of 500 °C/W.

RF Diode Feature Summary

• Optimized for switching applications requiring low resistance at low currents and low capacitance.
• Features unique configurations in surface mount packages to save board space and reduce cost.
• Designed for high reliability with a low failure in time rate and matched diodes for consistent performance.
• Offers better thermal conductivity for higher power dissipation capabilities.

RF Diode Applications

• RF switching circuits requiring low parasitic capacitance.
• Attenuator designs utilizing microstrip or coplanar waveguide layouts.
• Transmit/receive switches in communication systems.
• High isolation SPDT switch configurations.

RF Diode Procurement Notes

Verify the specific ordering suffix to confirm packaging details. The TR1 suffix indicates tape and reel packaging containing 3000 devices per 7-inch reel. Confirm compliance with lead-free assembly standards and ensure compatibility with standard surface mount reflow profiles during procurement planning.

RF Diode Selection Notes

Select this component when a single diode configuration with a 100 V breakdown voltage is required. Ensure the application benefits from the low series resistance at low bias currents. Verify that the SOT-23 package dimensions fit the PCB layout constraints and that the thermal resistance characteristics meet the system's heat dissipation requirements.

RF Diode Part Context

This part belongs to the HSMP-389x series of surface mount RF PIN switch diodes. The series offers various internal configurations including single, series, common anode, common cathode, and unconnected pairs/trios. These diodes are designed for frequencies where conventional PIN diodes may have limitations, providing flexibility in circuit design through different package options like SOT-23, SOT-323, and SOT-363.

RF Diode Replacement Considerations

Check datasheets for other HSMP-389x variants with matching 100 V breakdown and single diode configuration. Verify electrical parameters such as capacitance and series resistance against the original design requirements before substitution.

RF Diode FAQ

What is the package marking code for the HSMP-3890?

The package marking code for the HSMP-3890 is G0.

What is the typical carrier lifetime for the HSMP-389x series?

The typical carrier lifetime for the HSMP-389x series is 200 ns.

How does the series resistance vary with forward bias current?

The series resistance decreases as the forward bias current increases, allowing for lower insertion loss at higher drive levels.